为快速有效消除采掘工作面的突出危险性,论述了确定瓦斯抽采半径的各种方法,指出了确定瓦斯抽采半径存在的问题,并对确定瓦斯抽采半径应深入研究的方向进行展望。研究结果表明:现场测试瓦斯抽采半径存在测试难度较大、精度较差、测试结果仅是区间值等问题,现场实测法不能随瓦斯地质条件的改变动态确定瓦斯抽采半径;数值模拟方法确定的抽采半径未考虑含瓦斯煤的流变特性,确定的有效抽采时间存在较大误差,今后应加强考虑煤的流变特性的抽采过程的流固耦合研究,以确定合理的抽采半径,为瓦斯灾害防治提供依据。

In order to rapidly and effectively eliminate the outburst danger of the mining and excavation faces,the paper stated each method to determine the gas dr ainage radius,pointed out the problems existed in the determination of the gas drainage radius and had an outlook on the further study to determine the gas drainage ra dius.The study results showed that the gas drainage radius measures at site had high measuring difficulty and poor accuracy.The measured results were only the interv al value and other problems. The gas drainage radius measured could not be dynamically varied with the gas geological conditions.The gas drainage radius determined with the numerical simulation method had not considered the rheology features of the gas content coal and the effective gas drainage time determined had a high error. A further study on the liquid and solid coupling during the drainage process should consider the rhealogy features of the gas content coal to determine the rational gas drainage radius and to provide the basis for the gas disaster prevention and control.

国家自然科学基金资助项目(50904024)；“十二五”国家科技支撑计划资助项目(2012BAK09B02-1)；